DENSO keeps trying to develop new technologies aiming to contribute to the global environment by offering clean diesel vehicles.

Components

Engine Electronic Control Unit

The Engine ECU controls the diesel engine in response to speed changes by the driver while maintaining clean exhaust emissions from the engine. Based on information provided by sensors, the ECU issues commands to devices that control the timing and quantity of fuel injection and keeps exhaust emissions clean. It also diagnoses whether or not engine control devices are in good condition.

Intake Heater

Intake Air Temperature Sensor

Electronic Diesel Throttle Body

The Electronic Diesel Throttle Body reduces the amount of fresh air drawn into the diesel engine. This device increases the amount of Exhaust Gas Recirculation (EGR), which is the process of circulating a portion of the exhaust gas together with fresh air back into the engine, which reduces the production of nitrogen oxides (NOx).

Diesel Fuel Filter

Diesel engine vehicles are currently widespread all over the world. As increasing diesel injection pressure, the diesel engine would damage by poor fuel including such as water and particles. Therefore, the fuel filter requirements are gradually high to prevent the engine failure caused by poor fuel. DENSO fuel filter provides high performance for these requirements because we also design diesel injection systems.

Supply Pump

In diesel engines, fuel is injected and atomized into the compressed and heated air in the cylinders, and then the air-fuel mixture is self-ignited to produce thrust. Fuel must be highly pressurized to be instantaneously atomized and injected into the compressed air. The Supply Pump, a major common rail system component, significantly increases the pressure of fuel delivered from the fuel tank.

Solenoid Injector

In diesel engines, fuel is injected and atomized into the compressed and heated air in the cylinders, and then the air-fuel mixture is self-ignited to produce thrust. Solenoid Injectors inject fuel supplied under high pressure into the engine cylinders. These fuel injectors, main common rail system components, individually consist of a valve controller that operates based on instructions from the Engine ECU (computer) and a nozzle with a fine hole of approximately 0.1 mm internal diameter.

Rail

The Rail is a cylindrical pressure-proof reservoir of fuel highly pressurized by the Supply Pump. The rail, after which the common rail system is named, allows the injectors to always inject the fuel under the optimal pressure into the engine cylinders.

Common Rail Pressure Sensor

Ceramic Glow Plug

In diesel engines, fuel is injected and atomized into compressed and heated air, and then the air-fuel mixture is self-ignited to produce thrust. Ceramic Glow Plugs are electrically heated devices that ensure ignition during cold starts.

Exhaust Gas Recirculation (EGR) Valve (DC Motor Type)

Exhaust Gas Recirculation (EGR) is the process of circulating some exhaust gas, which is produced by the combustion of fuel in the engine, back into the engine. The DC Motor Type EGR Valve controls the amount of exhaust gas recirculation. EGR reduces the production of nitrogen oxides.

EGR Gas Temperature Sensor

Exhaust Gas Recirculation (EGR) circulates a portion of exhaust gas from the combustion of fuel in the engine back to the engine. The EGR Gas Temperature Sensor measures the temperature of recirculated exhaust gas. The process of EGR reduces the production of nitrogen oxides. By identifying the temperature of recirculated exhaust gas, EGR can be performed more effectively.

Exhaust Gas Temperature Sensor

The Exhaust Gas Temperature Sensor measures the temperature of exhaust gas from the engine. This sensor monitors whether a Diesel Particulate Filter (DPF) is heated to the optimal temperature to burn accumulated soot. Soot accumulated over time must be burned off periodically to prevent the DPF from becoming clogged with soot.

Diesel Particulate Filter for Diesel Particulate-NOx Reduction System

Installed in the exhaust pipe, the Diesel Particulate Filter (DPF) removes soot from diesel exhaust gases. DPFs are made of ceramic walls with numerous tiny holes invisible to the naked eye. When exhaust gases pass through the porous walls, soot particulates are trapped in the filter.

Exhaust Gas Pressure Sensor

The Exhaust Gas Pressure Sensor measures the pressure of the exhaust in the diesel engine's exhaust pipe. It actually measures the difference in exhaust gas pressure before and after the Diesel Particulate Filter (DPF) traps soot from exhaust gases to indicate the extent to which the DPF is clogged with accumulated soot.